| // Copyright 2014 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Flutter code sample for CupertinoSliverRefreshControl |
| |
| import 'package:flutter/cupertino.dart'; |
| |
| void main() => runApp(const MyApp()); |
| |
| class MyApp extends StatelessWidget { |
| const MyApp({Key? key}) : super(key: key); |
| |
| static const String _title = 'Flutter Code Sample'; |
| |
| @override |
| Widget build(BuildContext context) { |
| return const CupertinoApp( |
| title: _title, |
| home: MyStatefulWidget(), |
| ); |
| } |
| } |
| |
| class MyStatefulWidget extends StatefulWidget { |
| const MyStatefulWidget({Key? key}) : super(key: key); |
| |
| @override |
| State<MyStatefulWidget> createState() => _MyStatefulWidgetState(); |
| } |
| |
| class _MyStatefulWidgetState extends State<MyStatefulWidget> { |
| List<Color> colors = <Color>[ |
| CupertinoColors.systemYellow, |
| CupertinoColors.systemOrange, |
| CupertinoColors.systemPink |
| ]; |
| List<Widget> items = <Widget>[ |
| Container(color: CupertinoColors.systemPink, height: 100.0), |
| Container(color: CupertinoColors.systemOrange, height: 100.0), |
| Container(color: CupertinoColors.systemYellow, height: 100.0), |
| ]; |
| |
| @override |
| Widget build(BuildContext context) { |
| return CupertinoPageScaffold( |
| child: CustomScrollView( |
| physics: const BouncingScrollPhysics( |
| parent: AlwaysScrollableScrollPhysics(), |
| ), |
| slivers: <Widget>[ |
| const CupertinoSliverNavigationBar( |
| largeTitle: Text('Scroll down'), |
| ), |
| CupertinoSliverRefreshControl( |
| onRefresh: () async { |
| await Future<void>.delayed( |
| const Duration(milliseconds: 1000), |
| ); |
| setState(() { |
| items.insert( |
| 0, |
| Container(color: colors[items.length % 3], height: 100.0), |
| ); |
| }); |
| }, |
| ), |
| SliverList( |
| delegate: SliverChildBuilderDelegate( |
| (BuildContext context, int index) => items[index], |
| childCount: items.length, |
| ), |
| ), |
| ], |
| ), |
| ); |
| } |
| } |